Overview: 3 questions will be solved this time.Among them
           ☆1 mathematical statistics
           ☆1 arithmetic calculations
           ☆1 calculations of prime factor

[1/3 Formula]
    Work: Calculate the value of equation 161056-1.36*10^4 .
    Question type: Mathematical calculation
    Solution:
          161056-1.36*10^4
        =161056-1.36*10000
        =161056-13600
        =147456
    Answer:161056-1.36*10^4=147456
[2/3 Digtal analysis]
    Work：Break 147456 into prime factors.
    Question type: Resolving prime factor
    Solution:
        147456=2*2*2*2*2*2*2*2*2*2*2*2*2*2*3*3
    *Note: 147456 has 16 prime factors.
[ 3/3 data statistics ]
    Work: Please make statistics on the following data: 2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3 。
    Question type: data statistics
        Total data：16
        The sum：34
        Average value：2.125
        Variance：0.10938
        Standard deviation：0.33072
    *Note: Totally 5 items are counted.

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